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[bubb2521]

Will 255/40/18 snow tires fit the stock 18" wheels??? I am trying to learn how this works but am a little confused. Thanks

[Lionel Hutz]

255/40/18? Are you sure you don't mean 225? Those would be huge tires that almost certainly wouldn't fit the front wheels or clear the front wheelwells.

[bubb2521]

oh sorry, your right... I meant 225 front and 255 rear. Thats what this guy is saying that he is selling off his 1er???

[SPEZNAS92]

http://www.1addicts.com/forums/showt...ork+stock+rims

read post #9 to #14

welcome to the forum.

[bubb2521]

Thanks Guys! So the first number is thickness of tire. Second is width and third is size. got it now... I feel like an idiot, but everyone learns somewhere right?

[Artmasterx]

for a 225/45 r17 tire:

225 = tread width in millimeter (divide by 25.4 to get inches)

45 = actually a % corresponding to the sidewall height divided by the tread width (for the 225/45 it means the sidewall is 101 millimeters from the edge if the wheel to the tread of the tire)

17 = wheel radius in inches.

[SPEZNAS92]

Originally Posted by bubb2521

Thanks Guys! So the first number is thickness of tire. Second is width and third is size. got it now... I feel like an idiot, but everyone learns somewhere right?

Just to clarify the second number is relative to the Thickness (width of track) of the tire. It's a percentage, for example:

255/40/18 would mean 255 is the width of the tire, 40 means the sidewall height is 40 % of the first number (255) and the third number is the diameter of tire (18).

[bubb2521]

Gotcha!